Home / 20,110.28-27,752.64-11,157.65

Finding the Fourth Proportional to 20,110.28, 27,752.64 and 11,157.65

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Solution

The fourth proportional to 20,110.28, 27,752.64 and 11,157.65 is: 15,397.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.28 : 27,752.64 = 11,157.65 : x
  2. Step 2: Convert to fraction form
    20,110.28/27,752.64 = 11,157.65/x
  3. Step 3: Cross multiply
    20,110.28x = 27,752.64 × 11,157.65
  4. Step 4: Simplify right side
    20,110.28x = 309,654,313.08
  5. Step 5: Solve for x
    x = 309,654,313.08/20,110.28
  6. Step 6: Final answer
    x = 15,397.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.